[Github-comments] [geany/geany] Possible Data Loss if a file save fails during close (#1147)

[elextr]

Found by inspection, needs to be checked.

Both the plain C file IO and GIO (g_file_replace_contents) can leave the original file damaged if a failure occurs during a write.  The normal advice is to "don't panic, you still have the buffer contents to save somewhere else", but if the save fails during a close Geany will still close, so now both the original file and the buffer are lost.

Basically `libmain.c` in `main_quit` should not ignore the return from `document_close_all()`.

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https://github.com/geany/geany/issues/1147
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